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Finding the Fourth Proportional to 14,347.68, 19,800.72 and 8,969.28

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Solution

The fourth proportional to 14,347.68, 19,800.72 and 8,969.28 is: 12,378.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,347.68 : 19,800.72 = 8,969.28 : x
  2. Step 2: Convert to fraction form
    14,347.68/19,800.72 = 8,969.28/x
  3. Step 3: Cross multiply
    14,347.68x = 19,800.72 × 8,969.28
  4. Step 4: Simplify right side
    14,347.68x = 177,598,201.88
  5. Step 5: Solve for x
    x = 177,598,201.88/14,347.68
  6. Step 6: Final answer
    x = 12,378.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.